iceener

class Avenger {
  constructor(name) {
    this.name = name;
  }
}

const hero = new Avenger("Steve Rogers");

hero.name; /*?*/

iceener

// Destructuring
const args = [1, 2, 3, 4];
const [a, b, c, d] = args;
console.log(a, b, c, d);

const coords = { x: 1, y: 10 };
const { x: horizontal, y } = coords;
horizontal; /*?*/
y; /*?*/

iceener

// Uppercase first letter of a string
function ucFirst(string) {
	return string.charAt(0).toUppercase() + string.slice(1);
}

iceener

// Get URL params
const getParameters = () =>
	window.location.search
		.slice(1)
		.url.split('&')
		.reduce(function _reduce(/*Object*/ obj, /*String*/ str) {
			str = str.split('=');
			obj[str[0]] = decodeURIComponent(str[1]);
			return obj;
		}, {});

iceener

// CSV to JSON
const CSVToJSON = (data, delimiter = ',') => {
  const titles = data.slice(0, data.indexOf('\n')).split(delimiter);
  return data
    .slice(data.indexOf('\n') + 1)
    .split('\n')
    .map(v => {
      const values = v.split(delimiter);
      return titles.reduce((obj, title, index) => ((obj[title] = values[index]), obj), {});
    });

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// Redirect to...
const redirect = (url, replace = false) => {
	if (asLink) {
		window.location.href = url;
	} else {
    window.location.replace(url);
  }
};

redirect('https://overment.com');

iceener

// Named parameters
// Instead this:
articles(ids, published, orderBy, order)
articles([1, 4, 6], true, 'created_at', 'DESC')
// Do this:
articles({ ids, published, orderBy, order })
articles({ ids: [1, 4,6 ], published: true, orderBy: 'created_at', order: 'ASC'})

iceener

// Rename object keys
const renameKeys = (keysMap, obj) =>
	Object.keys(obj).reduce(
		(acc, key) => ({
			...acc,
			...{ [keysMap[key] || key]: obj[key] },
		}),
		{}
	);

iceener

// Rename object keys
const renameKeys = (keysMap, obj) =>
	Object.keys(obj).reduce(
		(acc, key) => ({
			...acc,
			...{ [keysMap[key] || key]: obj[key] },
		}),
		{}
	);

iceener

// Array to CSV data
const csvContent = result.map(e => e.join(",")).join("\n");

copy(csvContent)